DNB.cpp revision bd666017403e102e0ca435d6da585ff979f83598
1//===-- DNB.cpp -------------------------------------------------*- C++ -*-===// 2// 3// The LLVM Compiler Infrastructure 4// 5// This file is distributed under the University of Illinois Open Source 6// License. See LICENSE.TXT for details. 7// 8//===----------------------------------------------------------------------===// 9// 10// Created by Greg Clayton on 3/23/07. 11// 12//===----------------------------------------------------------------------===// 13 14#include "DNB.h" 15#include <signal.h> 16#include <stdio.h> 17#include <stdlib.h> 18#include <sys/resource.h> 19#include <sys/stat.h> 20#include <sys/types.h> 21#include <sys/wait.h> 22#include <unistd.h> 23#include <sys/sysctl.h> 24#include <map> 25#include <vector> 26 27#include "MacOSX/MachProcess.h" 28#include "MacOSX/MachTask.h" 29#include "CFString.h" 30#include "DNBLog.h" 31#include "DNBDataRef.h" 32#include "DNBThreadResumeActions.h" 33#include "DNBTimer.h" 34 35typedef std::tr1::shared_ptr<MachProcess> MachProcessSP; 36typedef std::map<nub_process_t, MachProcessSP> ProcessMap; 37typedef ProcessMap::iterator ProcessMapIter; 38typedef ProcessMap::const_iterator ProcessMapConstIter; 39 40static size_t GetAllInfos (std::vector<struct kinfo_proc>& proc_infos); 41static size_t GetAllInfosMatchingName (const char *process_name, std::vector<struct kinfo_proc>& matching_proc_infos); 42 43//---------------------------------------------------------------------- 44// A Thread safe singleton to get a process map pointer. 45// 46// Returns a pointer to the existing process map, or a pointer to a 47// newly created process map if CAN_CREATE is non-zero. 48//---------------------------------------------------------------------- 49static ProcessMap* 50GetProcessMap(bool can_create) 51{ 52 static ProcessMap* g_process_map_ptr = NULL; 53 54 if (can_create && g_process_map_ptr == NULL) 55 { 56 static pthread_mutex_t g_process_map_mutex = PTHREAD_MUTEX_INITIALIZER; 57 PTHREAD_MUTEX_LOCKER (locker, &g_process_map_mutex); 58 if (g_process_map_ptr == NULL) 59 g_process_map_ptr = new ProcessMap; 60 } 61 return g_process_map_ptr; 62} 63 64//---------------------------------------------------------------------- 65// Add PID to the shared process pointer map. 66// 67// Return non-zero value if we succeed in adding the process to the map. 68// The only time this should fail is if we run out of memory and can't 69// allocate a ProcessMap. 70//---------------------------------------------------------------------- 71static nub_bool_t 72AddProcessToMap (nub_process_t pid, MachProcessSP& procSP) 73{ 74 ProcessMap* process_map = GetProcessMap(true); 75 if (process_map) 76 { 77 process_map->insert(std::make_pair(pid, procSP)); 78 return true; 79 } 80 return false; 81} 82 83//---------------------------------------------------------------------- 84// Remove the shared pointer for PID from the process map. 85// 86// Returns the number of items removed from the process map. 87//---------------------------------------------------------------------- 88static size_t 89RemoveProcessFromMap (nub_process_t pid) 90{ 91 ProcessMap* process_map = GetProcessMap(false); 92 if (process_map) 93 { 94 return process_map->erase(pid); 95 } 96 return 0; 97} 98 99//---------------------------------------------------------------------- 100// Get the shared pointer for PID from the existing process map. 101// 102// Returns true if we successfully find a shared pointer to a 103// MachProcess object. 104//---------------------------------------------------------------------- 105static nub_bool_t 106GetProcessSP (nub_process_t pid, MachProcessSP& procSP) 107{ 108 ProcessMap* process_map = GetProcessMap(false); 109 if (process_map != NULL) 110 { 111 ProcessMapIter pos = process_map->find(pid); 112 if (pos != process_map->end()) 113 { 114 procSP = pos->second; 115 return true; 116 } 117 } 118 procSP.reset(); 119 return false; 120} 121 122 123static void * 124waitpid_thread (void *arg) 125{ 126 const pid_t pid = (pid_t)(intptr_t)arg; 127 int status; 128 while (1) 129 { 130 pid_t child_pid = waitpid(pid, &status, 0); 131 DNBLogThreadedIf(LOG_PROCESS, "waitpid_process_thread (): waitpid (pid = %i, &status, 0) => %i, status = %i, errno = %i", pid, child_pid, status, errno); 132 133 if (child_pid < 0) 134 { 135 if (errno == EINTR) 136 continue; 137 break; 138 } 139 else 140 { 141 if (WIFSTOPPED(status)) 142 { 143 continue; 144 } 145 else// if (WIFEXITED(status) || WIFSIGNALED(status)) 146 { 147 DNBLogThreadedIf(LOG_PROCESS, "waitpid_process_thread (): setting exit status for pid = %i to %i", child_pid, status); 148 DNBProcessSetExitStatus (child_pid, status); 149 return NULL; 150 } 151 } 152 } 153 154 // We should never exit as long as our child process is alive, so if we 155 // do something else went wrong and we should exit... 156 DNBLogThreadedIf(LOG_PROCESS, "waitpid_process_thread (): main loop exited, setting exit status to an invalid value (-1) for pid %i", pid); 157 DNBProcessSetExitStatus (pid, -1); 158 return NULL; 159} 160 161static bool 162spawn_waitpid_thread (pid_t pid) 163{ 164 pthread_t thread = THREAD_NULL; 165 ::pthread_create (&thread, NULL, waitpid_thread, (void *)(intptr_t)pid); 166 if (thread != THREAD_NULL) 167 { 168 ::pthread_detach (thread); 169 return true; 170 } 171 return false; 172} 173 174nub_process_t 175DNBProcessLaunch (const char *path, 176 char const *argv[], 177 const char *envp[], 178 const char *stdio_path, 179 bool no_stdio, 180 nub_launch_flavor_t launch_flavor, 181 int disable_aslr, 182 char *err_str, 183 size_t err_len) 184{ 185 DNBLogThreadedIf(LOG_PROCESS, "%s ( path='%s', argv = %p, envp = %p, launch_flavor = %u, disable_aslr = %d, err = %p, err_len = %zu) called...", __FUNCTION__, path, argv, envp, launch_flavor, disable_aslr, err_str, err_len); 186 187 if (err_str && err_len > 0) 188 err_str[0] = '\0'; 189 struct stat path_stat; 190 if (::stat(path, &path_stat) == -1) 191 { 192 char stat_error[256]; 193 ::strerror_r (errno, stat_error, sizeof(stat_error)); 194 snprintf(err_str, err_len, "%s (%s)", stat_error, path); 195 return INVALID_NUB_PROCESS; 196 } 197 198 MachProcessSP processSP (new MachProcess); 199 if (processSP.get()) 200 { 201 DNBError launch_err; 202 pid_t pid = processSP->LaunchForDebug(path, argv, envp, stdio_path, no_stdio, launch_flavor, disable_aslr, launch_err); 203 if (err_str) 204 { 205 *err_str = '\0'; 206 if (launch_err.Fail()) 207 { 208 const char *launch_err_str = launch_err.AsString(); 209 if (launch_err_str) 210 { 211 strncpy(err_str, launch_err_str, err_len-1); 212 err_str[err_len-1] = '\0'; // Make sure the error string is terminated 213 } 214 } 215 } 216 217 DNBLogThreadedIf(LOG_PROCESS, "(DebugNub) new pid is %d...", pid); 218 219 if (pid != INVALID_NUB_PROCESS) 220 { 221 // Spawn a thread to reap our child inferior process... 222 spawn_waitpid_thread (pid); 223 224 if (processSP->Task().TaskPortForProcessID (launch_err) == TASK_NULL) 225 { 226 // We failed to get the task for our process ID which is bad. 227 if (err_str && err_len > 0) 228 { 229 if (launch_err.AsString()) 230 { 231 ::snprintf (err_str, err_len, "failed to get the task for process %i (%s)", pid, launch_err.AsString()); 232 } 233 else 234 { 235 ::snprintf (err_str, err_len, "failed to get the task for process %i", pid); 236 } 237 } 238 } 239 else 240 { 241 assert(AddProcessToMap(pid, processSP)); 242 return pid; 243 } 244 } 245 } 246 return INVALID_NUB_PROCESS; 247} 248 249nub_process_t 250DNBProcessAttachByName (const char *name, struct timespec *timeout, char *err_str, size_t err_len) 251{ 252 if (err_str && err_len > 0) 253 err_str[0] = '\0'; 254 std::vector<struct kinfo_proc> matching_proc_infos; 255 size_t num_matching_proc_infos = GetAllInfosMatchingName(name, matching_proc_infos); 256 if (num_matching_proc_infos == 0) 257 { 258 DNBLogError ("error: no processes match '%s'\n", name); 259 return INVALID_NUB_PROCESS; 260 } 261 else if (num_matching_proc_infos > 1) 262 { 263 DNBLogError ("error: %u processes match '%s':\n", num_matching_proc_infos, name); 264 size_t i; 265 for (i=0; i<num_matching_proc_infos; ++i) 266 DNBLogError ("%6u - %s\n", matching_proc_infos[i].kp_proc.p_pid, matching_proc_infos[i].kp_proc.p_comm); 267 return INVALID_NUB_PROCESS; 268 } 269 270 return DNBProcessAttach (matching_proc_infos[0].kp_proc.p_pid, timeout, err_str, err_len); 271} 272 273nub_process_t 274DNBProcessAttach (nub_process_t attach_pid, struct timespec *timeout, char *err_str, size_t err_len) 275{ 276 if (err_str && err_len > 0) 277 err_str[0] = '\0'; 278 279 pid_t pid; 280 MachProcessSP processSP(new MachProcess); 281 if (processSP.get()) 282 { 283 DNBLogThreadedIf(LOG_PROCESS, "(DebugNub) attaching to pid %d...", attach_pid); 284 pid = processSP->AttachForDebug (attach_pid, err_str, err_len); 285 286 if (pid != INVALID_NUB_PROCESS) 287 { 288 assert(AddProcessToMap(pid, processSP)); 289 spawn_waitpid_thread(pid); 290 } 291 } 292 293 while (pid != INVALID_NUB_PROCESS) 294 { 295 // Wait for process to start up and hit entry point 296 DNBLogThreadedIf (LOG_PROCESS, 297 "%s DNBProcessWaitForEvent (%4.4x, eEventProcessRunningStateChanged | eEventProcessStoppedStateChanged, true, INFINITE)...", 298 __FUNCTION__, 299 pid); 300 nub_event_t set_events = DNBProcessWaitForEvents (pid, 301 eEventProcessRunningStateChanged | eEventProcessStoppedStateChanged, 302 true, 303 timeout); 304 305 DNBLogThreadedIf (LOG_PROCESS, 306 "%s DNBProcessWaitForEvent (%4.4x, eEventProcessRunningStateChanged | eEventProcessStoppedStateChanged, true, INFINITE) => 0x%8.8x", 307 __FUNCTION__, 308 pid, 309 set_events); 310 311 if (set_events == 0) 312 { 313 if (err_str && err_len > 0) 314 snprintf(err_str, err_len, "operation timed out"); 315 pid = INVALID_NUB_PROCESS; 316 } 317 else 318 { 319 if (set_events & (eEventProcessRunningStateChanged | eEventProcessStoppedStateChanged)) 320 { 321 nub_state_t pid_state = DNBProcessGetState (pid); 322 DNBLogThreadedIf (LOG_PROCESS, "%s process %4.4x state changed (eEventProcessStateChanged): %s", 323 __FUNCTION__, pid, DNBStateAsString(pid_state)); 324 325 switch (pid_state) 326 { 327 default: 328 case eStateInvalid: 329 case eStateUnloaded: 330 case eStateAttaching: 331 case eStateLaunching: 332 case eStateSuspended: 333 break; // Ignore 334 335 case eStateRunning: 336 case eStateStepping: 337 // Still waiting to stop at entry point... 338 break; 339 340 case eStateStopped: 341 case eStateCrashed: 342 return pid; 343 344 case eStateDetached: 345 case eStateExited: 346 if (err_str && err_len > 0) 347 snprintf(err_str, err_len, "process exited"); 348 return INVALID_NUB_PROCESS; 349 } 350 } 351 352 DNBProcessResetEvents(pid, set_events); 353 } 354 } 355 356 return INVALID_NUB_PROCESS; 357} 358 359static size_t 360GetAllInfos (std::vector<struct kinfo_proc>& proc_infos) 361{ 362 size_t size; 363 int name[] = { CTL_KERN, KERN_PROC, KERN_PROC_ALL }; 364 u_int namelen = sizeof(name)/sizeof(int); 365 int err; 366 367 // Try to find out how many processes are around so we can 368 // size the buffer appropriately. sysctl's man page specifically suggests 369 // this approach, and says it returns a bit larger size than needed to 370 // handle any new processes created between then and now. 371 372 err = ::sysctl (name, namelen, NULL, &size, NULL, 0); 373 374 if ((err < 0) && (err != ENOMEM)) 375 { 376 proc_infos.clear(); 377 perror("sysctl (mib, miblen, NULL, &num_processes, NULL, 0)"); 378 return 0; 379 } 380 381 382 // Increase the size of the buffer by a few processes in case more have 383 // been spawned 384 proc_infos.resize (size / sizeof(struct kinfo_proc)); 385 size = proc_infos.size() * sizeof(struct kinfo_proc); // Make sure we don't exceed our resize... 386 err = ::sysctl (name, namelen, &proc_infos[0], &size, NULL, 0); 387 if (err < 0) 388 { 389 proc_infos.clear(); 390 return 0; 391 } 392 393 // Trim down our array to fit what we actually got back 394 proc_infos.resize(size / sizeof(struct kinfo_proc)); 395 return proc_infos.size(); 396} 397 398 399static size_t 400GetAllInfosMatchingName(const char *full_process_name, std::vector<struct kinfo_proc>& matching_proc_infos) 401{ 402 403 matching_proc_infos.clear(); 404 if (full_process_name && full_process_name[0]) 405 { 406 // We only get the process name, not the full path, from the proc_info. So just take the 407 // base name of the process name... 408 const char *process_name; 409 process_name = strrchr (full_process_name, '/'); 410 if (process_name == NULL) 411 process_name = full_process_name; 412 else 413 process_name++; 414 415 std::vector<struct kinfo_proc> proc_infos; 416 const size_t num_proc_infos = GetAllInfos(proc_infos); 417 if (num_proc_infos > 0) 418 { 419 uint32_t i; 420 for (i=0; i<num_proc_infos; i++) 421 { 422 // Skip zombie processes and processes with unset status 423 if (proc_infos[i].kp_proc.p_stat == 0 || proc_infos[i].kp_proc.p_stat == SZOMB) 424 continue; 425 426 // Check for process by name. We only check the first MAXCOMLEN 427 // chars as that is all that kp_proc.p_comm holds. 428 if (::strncasecmp(proc_infos[i].kp_proc.p_comm, process_name, MAXCOMLEN) == 0) 429 { 430 // We found a matching process, add it to our list 431 matching_proc_infos.push_back(proc_infos[i]); 432 } 433 } 434 } 435 } 436 // return the newly added matches. 437 return matching_proc_infos.size(); 438} 439 440nub_process_t 441DNBProcessAttachWait (const char *waitfor_process_name, 442 nub_launch_flavor_t launch_flavor, 443 struct timespec *timeout_abstime, 444 useconds_t waitfor_interval, 445 char *err_str, 446 size_t err_len, 447 DNBShouldCancelCallback should_cancel_callback, 448 void *callback_data) 449{ 450 DNBError prepare_error; 451 std::vector<struct kinfo_proc> exclude_proc_infos; 452 size_t num_exclude_proc_infos; 453 454 // If the PrepareForAttach returns a valid token, use MachProcess to check 455 // for the process, otherwise scan the process table. 456 457 const void *attach_token = MachProcess::PrepareForAttach (waitfor_process_name, launch_flavor, true, prepare_error); 458 459 if (prepare_error.Fail()) 460 { 461 DNBLogError ("Error in PrepareForAttach: %s", prepare_error.AsString()); 462 return INVALID_NUB_PROCESS; 463 } 464 465 if (attach_token == NULL) 466 num_exclude_proc_infos = GetAllInfosMatchingName (waitfor_process_name, exclude_proc_infos); 467 468 DNBLogThreadedIf (LOG_PROCESS, "Waiting for '%s' to appear...\n", waitfor_process_name); 469 470 // Loop and try to find the process by name 471 nub_process_t waitfor_pid = INVALID_NUB_PROCESS; 472 473 while (waitfor_pid == INVALID_NUB_PROCESS) 474 { 475 if (attach_token != NULL) 476 { 477 nub_process_t pid; 478 pid = MachProcess::CheckForProcess(attach_token); 479 if (pid != INVALID_NUB_PROCESS) 480 { 481 waitfor_pid = pid; 482 break; 483 } 484 } 485 else 486 { 487 488 // Get the current process list, and check for matches that 489 // aren't in our original list. If anyone wants to attach 490 // to an existing process by name, they should do it with 491 // --attach=PROCNAME. Else we will wait for the first matching 492 // process that wasn't in our exclusion list. 493 std::vector<struct kinfo_proc> proc_infos; 494 const size_t num_proc_infos = GetAllInfosMatchingName (waitfor_process_name, proc_infos); 495 for (size_t i=0; i<num_proc_infos; i++) 496 { 497 nub_process_t curr_pid = proc_infos[i].kp_proc.p_pid; 498 for (size_t j=0; j<num_exclude_proc_infos; j++) 499 { 500 if (curr_pid == exclude_proc_infos[j].kp_proc.p_pid) 501 { 502 // This process was in our exclusion list, don't use it. 503 curr_pid = INVALID_NUB_PROCESS; 504 break; 505 } 506 } 507 508 // If we didn't find CURR_PID in our exclusion list, then use it. 509 if (curr_pid != INVALID_NUB_PROCESS) 510 { 511 // We found our process! 512 waitfor_pid = curr_pid; 513 break; 514 } 515 } 516 } 517 518 // If we haven't found our process yet, check for a timeout 519 // and then sleep for a bit until we poll again. 520 if (waitfor_pid == INVALID_NUB_PROCESS) 521 { 522 if (timeout_abstime != NULL) 523 { 524 // Check to see if we have a waitfor-duration option that 525 // has timed out? 526 if (DNBTimer::TimeOfDayLaterThan(*timeout_abstime)) 527 { 528 if (err_str && err_len > 0) 529 snprintf(err_str, err_len, "operation timed out"); 530 DNBLogError ("error: waiting for process '%s' timed out.\n", waitfor_process_name); 531 return INVALID_NUB_PROCESS; 532 } 533 } 534 535 // Call the should cancel callback as well... 536 537 if (should_cancel_callback != NULL 538 && should_cancel_callback (callback_data)) 539 { 540 DNBLogThreadedIf (LOG_PROCESS, "DNBProcessAttachWait cancelled by should_cancel callback."); 541 waitfor_pid = INVALID_NUB_PROCESS; 542 break; 543 } 544 545 ::usleep (waitfor_interval); // Sleep for WAITFOR_INTERVAL, then poll again 546 } 547 } 548 549 if (waitfor_pid != INVALID_NUB_PROCESS) 550 { 551 DNBLogThreadedIf (LOG_PROCESS, "Attaching to %s with pid %i...\n", waitfor_process_name, waitfor_pid); 552 waitfor_pid = DNBProcessAttach (waitfor_pid, timeout_abstime, err_str, err_len); 553 } 554 555 bool success = waitfor_pid != INVALID_NUB_PROCESS; 556 MachProcess::CleanupAfterAttach (attach_token, success, prepare_error); 557 558 return waitfor_pid; 559} 560 561nub_bool_t 562DNBProcessDetach (nub_process_t pid) 563{ 564 MachProcessSP procSP; 565 if (GetProcessSP (pid, procSP)) 566 { 567 return procSP->Detach(); 568 } 569 return false; 570} 571 572nub_bool_t 573DNBProcessKill (nub_process_t pid) 574{ 575 MachProcessSP procSP; 576 if (GetProcessSP (pid, procSP)) 577 { 578 return procSP->Kill (); 579 } 580 return false; 581} 582 583nub_bool_t 584DNBProcessSignal (nub_process_t pid, int signal) 585{ 586 MachProcessSP procSP; 587 if (GetProcessSP (pid, procSP)) 588 { 589 return procSP->Signal (signal); 590 } 591 return false; 592} 593 594 595nub_bool_t 596DNBProcessIsAlive (nub_process_t pid) 597{ 598 MachProcessSP procSP; 599 if (GetProcessSP (pid, procSP)) 600 { 601 return MachTask::IsValid (procSP->Task().TaskPort()); 602 } 603 return eStateInvalid; 604} 605 606//---------------------------------------------------------------------- 607// Process and Thread state information 608//---------------------------------------------------------------------- 609nub_state_t 610DNBProcessGetState (nub_process_t pid) 611{ 612 MachProcessSP procSP; 613 if (GetProcessSP (pid, procSP)) 614 { 615 return procSP->GetState(); 616 } 617 return eStateInvalid; 618} 619 620//---------------------------------------------------------------------- 621// Process and Thread state information 622//---------------------------------------------------------------------- 623nub_bool_t 624DNBProcessGetExitStatus (nub_process_t pid, int* status) 625{ 626 MachProcessSP procSP; 627 if (GetProcessSP (pid, procSP)) 628 { 629 return procSP->GetExitStatus(status); 630 } 631 return false; 632} 633 634nub_bool_t 635DNBProcessSetExitStatus (nub_process_t pid, int status) 636{ 637 MachProcessSP procSP; 638 if (GetProcessSP (pid, procSP)) 639 { 640 procSP->SetExitStatus(status); 641 return true; 642 } 643 return false; 644} 645 646 647const char * 648DNBThreadGetName (nub_process_t pid, nub_thread_t tid) 649{ 650 MachProcessSP procSP; 651 if (GetProcessSP (pid, procSP)) 652 return procSP->ThreadGetName(tid); 653 return NULL; 654} 655 656 657nub_bool_t 658DNBThreadGetIdentifierInfo (nub_process_t pid, nub_thread_t tid, thread_identifier_info_data_t *ident_info) 659{ 660 MachProcessSP procSP; 661 if (GetProcessSP (pid, procSP)) 662 return procSP->GetThreadList().GetIdentifierInfo(tid, ident_info); 663 return false; 664} 665 666nub_state_t 667DNBThreadGetState (nub_process_t pid, nub_thread_t tid) 668{ 669 MachProcessSP procSP; 670 if (GetProcessSP (pid, procSP)) 671 { 672 return procSP->ThreadGetState(tid); 673 } 674 return eStateInvalid; 675} 676 677const char * 678DNBStateAsString(nub_state_t state) 679{ 680 switch (state) 681 { 682 case eStateUnloaded: return "Unloaded"; 683 case eStateAttaching: return "Attaching"; 684 case eStateLaunching: return "Launching"; 685 case eStateStopped: return "Stopped"; 686 case eStateRunning: return "Running"; 687 case eStateStepping: return "Stepping"; 688 case eStateCrashed: return "Crashed"; 689 case eStateDetached: return "Detached"; 690 case eStateExited: return "Exited"; 691 case eStateSuspended: return "Suspended"; 692 } 693 return "nub_state_t ???"; 694} 695 696const char * 697DNBProcessGetExecutablePath (nub_process_t pid) 698{ 699 MachProcessSP procSP; 700 if (GetProcessSP (pid, procSP)) 701 { 702 return procSP->Path(); 703 } 704 return NULL; 705} 706 707nub_size_t 708DNBProcessGetArgumentCount (nub_process_t pid) 709{ 710 MachProcessSP procSP; 711 if (GetProcessSP (pid, procSP)) 712 { 713 return procSP->ArgumentCount(); 714 } 715 return 0; 716} 717 718const char * 719DNBProcessGetArgumentAtIndex (nub_process_t pid, nub_size_t idx) 720{ 721 MachProcessSP procSP; 722 if (GetProcessSP (pid, procSP)) 723 { 724 return procSP->ArgumentAtIndex (idx); 725 } 726 return NULL; 727} 728 729 730//---------------------------------------------------------------------- 731// Execution control 732//---------------------------------------------------------------------- 733nub_bool_t 734DNBProcessResume (nub_process_t pid, const DNBThreadResumeAction *actions, size_t num_actions) 735{ 736 DNBLogThreadedIf(LOG_PROCESS, "%s(pid = %4.4x)", __FUNCTION__, pid); 737 MachProcessSP procSP; 738 if (GetProcessSP (pid, procSP)) 739 { 740 DNBThreadResumeActions thread_actions (actions, num_actions); 741 742 // Below we add a default thread plan just in case one wasn't 743 // provided so all threads always know what they were supposed to do 744 if (thread_actions.IsEmpty()) 745 { 746 // No thread plans were given, so the default it to run all threads 747 thread_actions.SetDefaultThreadActionIfNeeded (eStateRunning, 0); 748 } 749 else 750 { 751 // Some thread plans were given which means anything that wasn't 752 // specified should remain stopped. 753 thread_actions.SetDefaultThreadActionIfNeeded (eStateStopped, 0); 754 } 755 return procSP->Resume (thread_actions); 756 } 757 return false; 758} 759 760nub_bool_t 761DNBProcessHalt (nub_process_t pid) 762{ 763 DNBLogThreadedIf(LOG_PROCESS, "%s(pid = %4.4x)", __FUNCTION__, pid); 764 MachProcessSP procSP; 765 if (GetProcessSP (pid, procSP)) 766 return procSP->Signal (SIGSTOP); 767 return false; 768} 769// 770//nub_bool_t 771//DNBThreadResume (nub_process_t pid, nub_thread_t tid, nub_bool_t step) 772//{ 773// DNBLogThreadedIf(LOG_THREAD, "%s(pid = %4.4x, tid = %4.4x, step = %u)", __FUNCTION__, pid, tid, (uint32_t)step); 774// MachProcessSP procSP; 775// if (GetProcessSP (pid, procSP)) 776// { 777// return procSP->Resume(tid, step, 0); 778// } 779// return false; 780//} 781// 782//nub_bool_t 783//DNBThreadResumeWithSignal (nub_process_t pid, nub_thread_t tid, nub_bool_t step, int signal) 784//{ 785// DNBLogThreadedIf(LOG_THREAD, "%s(pid = %4.4x, tid = %4.4x, step = %u, signal = %i)", __FUNCTION__, pid, tid, (uint32_t)step, signal); 786// MachProcessSP procSP; 787// if (GetProcessSP (pid, procSP)) 788// { 789// return procSP->Resume(tid, step, signal); 790// } 791// return false; 792//} 793 794nub_event_t 795DNBProcessWaitForEvents (nub_process_t pid, nub_event_t event_mask, bool wait_for_set, struct timespec* timeout) 796{ 797 nub_event_t result = 0; 798 MachProcessSP procSP; 799 if (GetProcessSP (pid, procSP)) 800 { 801 if (wait_for_set) 802 result = procSP->Events().WaitForSetEvents(event_mask, timeout); 803 else 804 result = procSP->Events().WaitForEventsToReset(event_mask, timeout); 805 } 806 return result; 807} 808 809void 810DNBProcessResetEvents (nub_process_t pid, nub_event_t event_mask) 811{ 812 MachProcessSP procSP; 813 if (GetProcessSP (pid, procSP)) 814 procSP->Events().ResetEvents(event_mask); 815} 816 817void 818DNBProcessInterruptEvents (nub_process_t pid) 819{ 820 MachProcessSP procSP; 821 if (GetProcessSP (pid, procSP)) 822 procSP->Events().SetEvents(eEventProcessAsyncInterrupt); 823} 824 825 826// Breakpoints 827nub_break_t 828DNBBreakpointSet (nub_process_t pid, nub_addr_t addr, nub_size_t size, nub_bool_t hardware) 829{ 830 MachProcessSP procSP; 831 if (GetProcessSP (pid, procSP)) 832 { 833 return procSP->CreateBreakpoint(addr, size, hardware, THREAD_NULL); 834 } 835 return INVALID_NUB_BREAK_ID; 836} 837 838nub_bool_t 839DNBBreakpointClear (nub_process_t pid, nub_break_t breakID) 840{ 841 if (NUB_BREAK_ID_IS_VALID(breakID)) 842 { 843 MachProcessSP procSP; 844 if (GetProcessSP (pid, procSP)) 845 { 846 return procSP->DisableBreakpoint(breakID, true); 847 } 848 } 849 return false; // Failed 850} 851 852nub_ssize_t 853DNBBreakpointGetHitCount (nub_process_t pid, nub_break_t breakID) 854{ 855 if (NUB_BREAK_ID_IS_VALID(breakID)) 856 { 857 MachProcessSP procSP; 858 if (GetProcessSP (pid, procSP)) 859 { 860 DNBBreakpoint *bp = procSP->Breakpoints().FindByID(breakID); 861 if (bp) 862 return bp->GetHitCount(); 863 } 864 } 865 return 0; 866} 867 868nub_ssize_t 869DNBBreakpointGetIgnoreCount (nub_process_t pid, nub_break_t breakID) 870{ 871 if (NUB_BREAK_ID_IS_VALID(breakID)) 872 { 873 MachProcessSP procSP; 874 if (GetProcessSP (pid, procSP)) 875 { 876 DNBBreakpoint *bp = procSP->Breakpoints().FindByID(breakID); 877 if (bp) 878 return bp->GetIgnoreCount(); 879 } 880 } 881 return 0; 882} 883 884nub_bool_t 885DNBBreakpointSetIgnoreCount (nub_process_t pid, nub_break_t breakID, nub_size_t ignore_count) 886{ 887 if (NUB_BREAK_ID_IS_VALID(breakID)) 888 { 889 MachProcessSP procSP; 890 if (GetProcessSP (pid, procSP)) 891 { 892 DNBBreakpoint *bp = procSP->Breakpoints().FindByID(breakID); 893 if (bp) 894 { 895 bp->SetIgnoreCount(ignore_count); 896 return true; 897 } 898 } 899 } 900 return false; 901} 902 903// Set the callback function for a given breakpoint. The callback function will 904// get called as soon as the breakpoint is hit. The function will be called 905// with the process ID, thread ID, breakpoint ID and the baton, and can return 906// 907nub_bool_t 908DNBBreakpointSetCallback (nub_process_t pid, nub_break_t breakID, DNBCallbackBreakpointHit callback, void *baton) 909{ 910 if (NUB_BREAK_ID_IS_VALID(breakID)) 911 { 912 MachProcessSP procSP; 913 if (GetProcessSP (pid, procSP)) 914 { 915 DNBBreakpoint *bp = procSP->Breakpoints().FindByID(breakID); 916 if (bp) 917 { 918 bp->SetCallback(callback, baton); 919 return true; 920 } 921 } 922 } 923 return false; 924} 925 926//---------------------------------------------------------------------- 927// Dump the breakpoints stats for process PID for a breakpoint by ID. 928//---------------------------------------------------------------------- 929void 930DNBBreakpointPrint (nub_process_t pid, nub_break_t breakID) 931{ 932 MachProcessSP procSP; 933 if (GetProcessSP (pid, procSP)) 934 procSP->DumpBreakpoint(breakID); 935} 936 937//---------------------------------------------------------------------- 938// Watchpoints 939//---------------------------------------------------------------------- 940nub_watch_t 941DNBWatchpointSet (nub_process_t pid, nub_addr_t addr, nub_size_t size, uint32_t watch_flags, nub_bool_t hardware) 942{ 943 MachProcessSP procSP; 944 if (GetProcessSP (pid, procSP)) 945 { 946 return procSP->CreateWatchpoint(addr, size, watch_flags, hardware, THREAD_NULL); 947 } 948 return INVALID_NUB_BREAK_ID; 949} 950 951nub_bool_t 952DNBWatchpointClear (nub_process_t pid, nub_watch_t watchID) 953{ 954 if (NUB_BREAK_ID_IS_VALID(watchID)) 955 { 956 MachProcessSP procSP; 957 if (GetProcessSP (pid, procSP)) 958 { 959 return procSP->DisableWatchpoint(watchID, true); 960 } 961 } 962 return false; // Failed 963} 964 965nub_ssize_t 966DNBWatchpointGetHitCount (nub_process_t pid, nub_watch_t watchID) 967{ 968 if (NUB_BREAK_ID_IS_VALID(watchID)) 969 { 970 MachProcessSP procSP; 971 if (GetProcessSP (pid, procSP)) 972 { 973 DNBBreakpoint *bp = procSP->Watchpoints().FindByID(watchID); 974 if (bp) 975 return bp->GetHitCount(); 976 } 977 } 978 return 0; 979} 980 981nub_ssize_t 982DNBWatchpointGetIgnoreCount (nub_process_t pid, nub_watch_t watchID) 983{ 984 if (NUB_BREAK_ID_IS_VALID(watchID)) 985 { 986 MachProcessSP procSP; 987 if (GetProcessSP (pid, procSP)) 988 { 989 DNBBreakpoint *bp = procSP->Watchpoints().FindByID(watchID); 990 if (bp) 991 return bp->GetIgnoreCount(); 992 } 993 } 994 return 0; 995} 996 997nub_bool_t 998DNBWatchpointSetIgnoreCount (nub_process_t pid, nub_watch_t watchID, nub_size_t ignore_count) 999{ 1000 if (NUB_BREAK_ID_IS_VALID(watchID)) 1001 { 1002 MachProcessSP procSP; 1003 if (GetProcessSP (pid, procSP)) 1004 { 1005 DNBBreakpoint *bp = procSP->Watchpoints().FindByID(watchID); 1006 if (bp) 1007 { 1008 bp->SetIgnoreCount(ignore_count); 1009 return true; 1010 } 1011 } 1012 } 1013 return false; 1014} 1015 1016// Set the callback function for a given watchpoint. The callback function will 1017// get called as soon as the watchpoint is hit. The function will be called 1018// with the process ID, thread ID, watchpoint ID and the baton, and can return 1019// 1020nub_bool_t 1021DNBWatchpointSetCallback (nub_process_t pid, nub_watch_t watchID, DNBCallbackBreakpointHit callback, void *baton) 1022{ 1023 if (NUB_BREAK_ID_IS_VALID(watchID)) 1024 { 1025 MachProcessSP procSP; 1026 if (GetProcessSP (pid, procSP)) 1027 { 1028 DNBBreakpoint *bp = procSP->Watchpoints().FindByID(watchID); 1029 if (bp) 1030 { 1031 bp->SetCallback(callback, baton); 1032 return true; 1033 } 1034 } 1035 } 1036 return false; 1037} 1038 1039//---------------------------------------------------------------------- 1040// Dump the watchpoints stats for process PID for a watchpoint by ID. 1041//---------------------------------------------------------------------- 1042void 1043DNBWatchpointPrint (nub_process_t pid, nub_watch_t watchID) 1044{ 1045 MachProcessSP procSP; 1046 if (GetProcessSP (pid, procSP)) 1047 procSP->DumpWatchpoint(watchID); 1048} 1049 1050//---------------------------------------------------------------------- 1051// Read memory in the address space of process PID. This call will take 1052// care of setting and restoring permissions and breaking up the memory 1053// read into multiple chunks as required. 1054// 1055// RETURNS: number of bytes actually read 1056//---------------------------------------------------------------------- 1057nub_size_t 1058DNBProcessMemoryRead (nub_process_t pid, nub_addr_t addr, nub_size_t size, void *buf) 1059{ 1060 MachProcessSP procSP; 1061 if (GetProcessSP (pid, procSP)) 1062 return procSP->ReadMemory(addr, size, buf); 1063 return 0; 1064} 1065 1066//---------------------------------------------------------------------- 1067// Write memory to the address space of process PID. This call will take 1068// care of setting and restoring permissions and breaking up the memory 1069// write into multiple chunks as required. 1070// 1071// RETURNS: number of bytes actually written 1072//---------------------------------------------------------------------- 1073nub_size_t 1074DNBProcessMemoryWrite (nub_process_t pid, nub_addr_t addr, nub_size_t size, const void *buf) 1075{ 1076 MachProcessSP procSP; 1077 if (GetProcessSP (pid, procSP)) 1078 return procSP->WriteMemory(addr, size, buf); 1079 return 0; 1080} 1081 1082nub_addr_t 1083DNBProcessMemoryAllocate (nub_process_t pid, nub_size_t size, uint32_t permissions) 1084{ 1085 MachProcessSP procSP; 1086 if (GetProcessSP (pid, procSP)) 1087 return procSP->Task().AllocateMemory (size, permissions); 1088 return 0; 1089} 1090 1091nub_bool_t 1092DNBProcessMemoryDeallocate (nub_process_t pid, nub_addr_t addr) 1093{ 1094 MachProcessSP procSP; 1095 if (GetProcessSP (pid, procSP)) 1096 return procSP->Task().DeallocateMemory (addr); 1097 return 0; 1098} 1099 1100 1101//---------------------------------------------------------------------- 1102// Formatted output that uses memory and registers from process and 1103// thread in place of arguments. 1104//---------------------------------------------------------------------- 1105nub_size_t 1106DNBPrintf (nub_process_t pid, nub_thread_t tid, nub_addr_t base_addr, FILE *file, const char *format) 1107{ 1108 if (file == NULL) 1109 return 0; 1110 enum printf_flags 1111 { 1112 alternate_form = (1 << 0), 1113 zero_padding = (1 << 1), 1114 negative_field_width = (1 << 2), 1115 blank_space = (1 << 3), 1116 show_sign = (1 << 4), 1117 show_thousands_separator= (1 << 5), 1118 }; 1119 1120 enum printf_length_modifiers 1121 { 1122 length_mod_h = (1 << 0), 1123 length_mod_hh = (1 << 1), 1124 length_mod_l = (1 << 2), 1125 length_mod_ll = (1 << 3), 1126 length_mod_L = (1 << 4), 1127 length_mod_j = (1 << 5), 1128 length_mod_t = (1 << 6), 1129 length_mod_z = (1 << 7), 1130 length_mod_q = (1 << 8), 1131 }; 1132 1133 nub_addr_t addr = base_addr; 1134 char *end_format = (char*)format + strlen(format); 1135 char *end = NULL; // For strtoXXXX calls; 1136 std::basic_string<uint8_t> buf; 1137 nub_size_t total_bytes_read = 0; 1138 DNBDataRef data; 1139 const char *f; 1140 for (f = format; *f != '\0' && f < end_format; f++) 1141 { 1142 char ch = *f; 1143 switch (ch) 1144 { 1145 case '%': 1146 { 1147 f++; // Skip the '%' character 1148 int min_field_width = 0; 1149 int precision = 0; 1150 uint32_t flags = 0; 1151 uint32_t length_modifiers = 0; 1152 uint32_t byte_size = 0; 1153 uint32_t actual_byte_size = 0; 1154 bool is_string = false; 1155 bool is_register = false; 1156 DNBRegisterValue register_value; 1157 int64_t register_offset = 0; 1158 nub_addr_t register_addr = INVALID_NUB_ADDRESS; 1159 1160 // Create the format string to use for this conversion specification 1161 // so we can remove and mprintf specific flags and formatters. 1162 std::string fprintf_format("%"); 1163 1164 // Decode any flags 1165 switch (*f) 1166 { 1167 case '#': fprintf_format += *f++; flags |= alternate_form; break; 1168 case '0': fprintf_format += *f++; flags |= zero_padding; break; 1169 case '-': fprintf_format += *f++; flags |= negative_field_width; break; 1170 case ' ': fprintf_format += *f++; flags |= blank_space; break; 1171 case '+': fprintf_format += *f++; flags |= show_sign; break; 1172 case ',': fprintf_format += *f++; flags |= show_thousands_separator;break; 1173 case '{': 1174 case '[': 1175 { 1176 // We have a register name specification that can take two forms: 1177 // ${regname} or ${regname+offset} 1178 // The action is to read the register value and add the signed offset 1179 // (if any) and use that as the value to format. 1180 // $[regname] or $[regname+offset] 1181 // The action is to read the register value and add the signed offset 1182 // (if any) and use the result as an address to dereference. The size 1183 // of what is dereferenced is specified by the actual byte size that 1184 // follows the minimum field width and precision (see comments below). 1185 switch (*f) 1186 { 1187 case '{': 1188 case '[': 1189 { 1190 char open_scope_ch = *f; 1191 f++; 1192 const char *reg_name = f; 1193 size_t reg_name_length = strcspn(f, "+-}]"); 1194 if (reg_name_length > 0) 1195 { 1196 std::string register_name(reg_name, reg_name_length); 1197 f += reg_name_length; 1198 register_offset = strtoll(f, &end, 0); 1199 if (f < end) 1200 f = end; 1201 if ((open_scope_ch == '{' && *f != '}') || (open_scope_ch == '[' && *f != ']')) 1202 { 1203 fprintf(file, "error: Invalid register format string. Valid formats are %%{regname} or %%{regname+offset}, %%[regname] or %%[regname+offset]\n"); 1204 return total_bytes_read; 1205 } 1206 else 1207 { 1208 f++; 1209 if (DNBThreadGetRegisterValueByName(pid, tid, REGISTER_SET_ALL, register_name.c_str(), ®ister_value)) 1210 { 1211 // Set the address to dereference using the register value plus the offset 1212 switch (register_value.info.size) 1213 { 1214 default: 1215 case 0: 1216 fprintf (file, "error: unsupported register size of %u.\n", register_value.info.size); 1217 return total_bytes_read; 1218 1219 case 1: register_addr = register_value.value.uint8 + register_offset; break; 1220 case 2: register_addr = register_value.value.uint16 + register_offset; break; 1221 case 4: register_addr = register_value.value.uint32 + register_offset; break; 1222 case 8: register_addr = register_value.value.uint64 + register_offset; break; 1223 case 16: 1224 if (open_scope_ch == '[') 1225 { 1226 fprintf (file, "error: register size (%u) too large for address.\n", register_value.info.size); 1227 return total_bytes_read; 1228 } 1229 break; 1230 } 1231 1232 if (open_scope_ch == '{') 1233 { 1234 byte_size = register_value.info.size; 1235 is_register = true; // value is in a register 1236 1237 } 1238 else 1239 { 1240 addr = register_addr; // Use register value and offset as the address 1241 } 1242 } 1243 else 1244 { 1245 fprintf(file, "error: unable to read register '%s' for process %#.4x and thread %#.4x\n", register_name.c_str(), pid, tid); 1246 return total_bytes_read; 1247 } 1248 } 1249 } 1250 } 1251 break; 1252 1253 default: 1254 fprintf(file, "error: %%$ must be followed by (regname + n) or [regname + n]\n"); 1255 return total_bytes_read; 1256 } 1257 } 1258 break; 1259 } 1260 1261 // Check for a minimum field width 1262 if (isdigit(*f)) 1263 { 1264 min_field_width = strtoul(f, &end, 10); 1265 if (end > f) 1266 { 1267 fprintf_format.append(f, end - f); 1268 f = end; 1269 } 1270 } 1271 1272 1273 // Check for a precision 1274 if (*f == '.') 1275 { 1276 f++; 1277 if (isdigit(*f)) 1278 { 1279 fprintf_format += '.'; 1280 precision = strtoul(f, &end, 10); 1281 if (end > f) 1282 { 1283 fprintf_format.append(f, end - f); 1284 f = end; 1285 } 1286 } 1287 } 1288 1289 1290 // mprintf specific: read the optional actual byte size (abs) 1291 // after the standard minimum field width (mfw) and precision (prec). 1292 // Standard printf calls you can have "mfw.prec" or ".prec", but 1293 // mprintf can have "mfw.prec.abs", ".prec.abs" or "..abs". This is nice 1294 // for strings that may be in a fixed size buffer, but may not use all bytes 1295 // in that buffer for printable characters. 1296 if (*f == '.') 1297 { 1298 f++; 1299 actual_byte_size = strtoul(f, &end, 10); 1300 if (end > f) 1301 { 1302 byte_size = actual_byte_size; 1303 f = end; 1304 } 1305 } 1306 1307 // Decode the length modifiers 1308 switch (*f) 1309 { 1310 case 'h': // h and hh length modifiers 1311 fprintf_format += *f++; 1312 length_modifiers |= length_mod_h; 1313 if (*f == 'h') 1314 { 1315 fprintf_format += *f++; 1316 length_modifiers |= length_mod_hh; 1317 } 1318 break; 1319 1320 case 'l': // l and ll length modifiers 1321 fprintf_format += *f++; 1322 length_modifiers |= length_mod_l; 1323 if (*f == 'h') 1324 { 1325 fprintf_format += *f++; 1326 length_modifiers |= length_mod_ll; 1327 } 1328 break; 1329 1330 case 'L': fprintf_format += *f++; length_modifiers |= length_mod_L; break; 1331 case 'j': fprintf_format += *f++; length_modifiers |= length_mod_j; break; 1332 case 't': fprintf_format += *f++; length_modifiers |= length_mod_t; break; 1333 case 'z': fprintf_format += *f++; length_modifiers |= length_mod_z; break; 1334 case 'q': fprintf_format += *f++; length_modifiers |= length_mod_q; break; 1335 } 1336 1337 // Decode the conversion specifier 1338 switch (*f) 1339 { 1340 case '_': 1341 // mprintf specific format items 1342 { 1343 ++f; // Skip the '_' character 1344 switch (*f) 1345 { 1346 case 'a': // Print the current address 1347 ++f; 1348 fprintf_format += "ll"; 1349 fprintf_format += *f; // actual format to show address with folows the 'a' ("%_ax") 1350 fprintf (file, fprintf_format.c_str(), addr); 1351 break; 1352 case 'o': // offset from base address 1353 ++f; 1354 fprintf_format += "ll"; 1355 fprintf_format += *f; // actual format to show address with folows the 'a' ("%_ox") 1356 fprintf(file, fprintf_format.c_str(), addr - base_addr); 1357 break; 1358 default: 1359 fprintf (file, "error: unsupported mprintf specific format character '%c'.\n", *f); 1360 break; 1361 } 1362 continue; 1363 } 1364 break; 1365 1366 case 'D': 1367 case 'O': 1368 case 'U': 1369 fprintf_format += *f; 1370 if (byte_size == 0) 1371 byte_size = sizeof(long int); 1372 break; 1373 1374 case 'd': 1375 case 'i': 1376 case 'o': 1377 case 'u': 1378 case 'x': 1379 case 'X': 1380 fprintf_format += *f; 1381 if (byte_size == 0) 1382 { 1383 if (length_modifiers & length_mod_hh) 1384 byte_size = sizeof(char); 1385 else if (length_modifiers & length_mod_h) 1386 byte_size = sizeof(short); 1387 if (length_modifiers & length_mod_ll) 1388 byte_size = sizeof(long long); 1389 else if (length_modifiers & length_mod_l) 1390 byte_size = sizeof(long); 1391 else 1392 byte_size = sizeof(int); 1393 } 1394 break; 1395 1396 case 'a': 1397 case 'A': 1398 case 'f': 1399 case 'F': 1400 case 'e': 1401 case 'E': 1402 case 'g': 1403 case 'G': 1404 fprintf_format += *f; 1405 if (byte_size == 0) 1406 { 1407 if (length_modifiers & length_mod_L) 1408 byte_size = sizeof(long double); 1409 else 1410 byte_size = sizeof(double); 1411 } 1412 break; 1413 1414 case 'c': 1415 if ((length_modifiers & length_mod_l) == 0) 1416 { 1417 fprintf_format += *f; 1418 if (byte_size == 0) 1419 byte_size = sizeof(char); 1420 break; 1421 } 1422 // Fall through to 'C' modifier below... 1423 1424 case 'C': 1425 fprintf_format += *f; 1426 if (byte_size == 0) 1427 byte_size = sizeof(wchar_t); 1428 break; 1429 1430 case 's': 1431 fprintf_format += *f; 1432 if (is_register || byte_size == 0) 1433 is_string = 1; 1434 break; 1435 1436 case 'p': 1437 fprintf_format += *f; 1438 if (byte_size == 0) 1439 byte_size = sizeof(void*); 1440 break; 1441 } 1442 1443 if (is_string) 1444 { 1445 std::string mem_string; 1446 const size_t string_buf_len = 4; 1447 char string_buf[string_buf_len+1]; 1448 char *string_buf_end = string_buf + string_buf_len; 1449 string_buf[string_buf_len] = '\0'; 1450 nub_size_t bytes_read; 1451 nub_addr_t str_addr = is_register ? register_addr : addr; 1452 while ((bytes_read = DNBProcessMemoryRead(pid, str_addr, string_buf_len, &string_buf[0])) > 0) 1453 { 1454 // Did we get a NULL termination character yet? 1455 if (strchr(string_buf, '\0') == string_buf_end) 1456 { 1457 // no NULL terminator yet, append as a std::string 1458 mem_string.append(string_buf, string_buf_len); 1459 str_addr += string_buf_len; 1460 } 1461 else 1462 { 1463 // yep 1464 break; 1465 } 1466 } 1467 // Append as a C-string so we don't get the extra NULL 1468 // characters in the temp buffer (since it was resized) 1469 mem_string += string_buf; 1470 size_t mem_string_len = mem_string.size() + 1; 1471 fprintf(file, fprintf_format.c_str(), mem_string.c_str()); 1472 if (mem_string_len > 0) 1473 { 1474 if (!is_register) 1475 { 1476 addr += mem_string_len; 1477 total_bytes_read += mem_string_len; 1478 } 1479 } 1480 else 1481 return total_bytes_read; 1482 } 1483 else 1484 if (byte_size > 0) 1485 { 1486 buf.resize(byte_size); 1487 nub_size_t bytes_read = 0; 1488 if (is_register) 1489 bytes_read = register_value.info.size; 1490 else 1491 bytes_read = DNBProcessMemoryRead(pid, addr, buf.size(), &buf[0]); 1492 if (bytes_read > 0) 1493 { 1494 if (!is_register) 1495 total_bytes_read += bytes_read; 1496 1497 if (bytes_read == byte_size) 1498 { 1499 switch (*f) 1500 { 1501 case 'd': 1502 case 'i': 1503 case 'o': 1504 case 'u': 1505 case 'X': 1506 case 'x': 1507 case 'a': 1508 case 'A': 1509 case 'f': 1510 case 'F': 1511 case 'e': 1512 case 'E': 1513 case 'g': 1514 case 'G': 1515 case 'p': 1516 case 'c': 1517 case 'C': 1518 { 1519 if (is_register) 1520 data.SetData(®ister_value.value.v_uint8[0], register_value.info.size); 1521 else 1522 data.SetData(&buf[0], bytes_read); 1523 DNBDataRef::offset_t data_offset = 0; 1524 if (byte_size <= 4) 1525 { 1526 uint32_t u32 = data.GetMax32(&data_offset, byte_size); 1527 // Show the actual byte width when displaying hex 1528 fprintf(file, fprintf_format.c_str(), u32); 1529 } 1530 else if (byte_size <= 8) 1531 { 1532 uint64_t u64 = data.GetMax64(&data_offset, byte_size); 1533 // Show the actual byte width when displaying hex 1534 fprintf(file, fprintf_format.c_str(), u64); 1535 } 1536 else 1537 { 1538 fprintf(file, "error: integer size not supported, must be 8 bytes or less (%u bytes).\n", byte_size); 1539 } 1540 if (!is_register) 1541 addr += byte_size; 1542 } 1543 break; 1544 1545 case 's': 1546 fprintf(file, fprintf_format.c_str(), buf.c_str()); 1547 addr += byte_size; 1548 break; 1549 1550 default: 1551 fprintf(file, "error: unsupported conversion specifier '%c'.\n", *f); 1552 break; 1553 } 1554 } 1555 } 1556 } 1557 else 1558 return total_bytes_read; 1559 } 1560 break; 1561 1562 case '\\': 1563 { 1564 f++; 1565 switch (*f) 1566 { 1567 case 'e': ch = '\e'; break; 1568 case 'a': ch = '\a'; break; 1569 case 'b': ch = '\b'; break; 1570 case 'f': ch = '\f'; break; 1571 case 'n': ch = '\n'; break; 1572 case 'r': ch = '\r'; break; 1573 case 't': ch = '\t'; break; 1574 case 'v': ch = '\v'; break; 1575 case '\'': ch = '\''; break; 1576 case '\\': ch = '\\'; break; 1577 case '0': 1578 case '1': 1579 case '2': 1580 case '3': 1581 case '4': 1582 case '5': 1583 case '6': 1584 case '7': 1585 ch = strtoul(f, &end, 8); 1586 f = end; 1587 break; 1588 default: 1589 ch = *f; 1590 break; 1591 } 1592 fputc(ch, file); 1593 } 1594 break; 1595 1596 default: 1597 fputc(ch, file); 1598 break; 1599 } 1600 } 1601 return total_bytes_read; 1602} 1603 1604 1605//---------------------------------------------------------------------- 1606// Get the number of threads for the specified process. 1607//---------------------------------------------------------------------- 1608nub_size_t 1609DNBProcessGetNumThreads (nub_process_t pid) 1610{ 1611 MachProcessSP procSP; 1612 if (GetProcessSP (pid, procSP)) 1613 return procSP->GetNumThreads(); 1614 return 0; 1615} 1616 1617//---------------------------------------------------------------------- 1618// Get the thread ID of the current thread. 1619//---------------------------------------------------------------------- 1620nub_thread_t 1621DNBProcessGetCurrentThread (nub_process_t pid) 1622{ 1623 MachProcessSP procSP; 1624 if (GetProcessSP (pid, procSP)) 1625 return procSP->GetCurrentThread(); 1626 return 0; 1627} 1628 1629//---------------------------------------------------------------------- 1630// Change the current thread. 1631//---------------------------------------------------------------------- 1632nub_thread_t 1633DNBProcessSetCurrentThread (nub_process_t pid, nub_thread_t tid) 1634{ 1635 MachProcessSP procSP; 1636 if (GetProcessSP (pid, procSP)) 1637 return procSP->SetCurrentThread (tid); 1638 return INVALID_NUB_THREAD; 1639} 1640 1641 1642//---------------------------------------------------------------------- 1643// Dump a string describing a thread's stop reason to the specified file 1644// handle 1645//---------------------------------------------------------------------- 1646nub_bool_t 1647DNBThreadGetStopReason (nub_process_t pid, nub_thread_t tid, struct DNBThreadStopInfo *stop_info) 1648{ 1649 MachProcessSP procSP; 1650 if (GetProcessSP (pid, procSP)) 1651 return procSP->GetThreadStoppedReason (tid, stop_info); 1652 return false; 1653} 1654 1655//---------------------------------------------------------------------- 1656// Return string description for the specified thread. 1657// 1658// RETURNS: NULL if the thread isn't valid, else a NULL terminated C 1659// string from a static buffer that must be copied prior to subsequent 1660// calls. 1661//---------------------------------------------------------------------- 1662const char * 1663DNBThreadGetInfo (nub_process_t pid, nub_thread_t tid) 1664{ 1665 MachProcessSP procSP; 1666 if (GetProcessSP (pid, procSP)) 1667 return procSP->GetThreadInfo (tid); 1668 return NULL; 1669} 1670 1671//---------------------------------------------------------------------- 1672// Get the thread ID given a thread index. 1673//---------------------------------------------------------------------- 1674nub_thread_t 1675DNBProcessGetThreadAtIndex (nub_process_t pid, size_t thread_idx) 1676{ 1677 MachProcessSP procSP; 1678 if (GetProcessSP (pid, procSP)) 1679 return procSP->GetThreadAtIndex (thread_idx); 1680 return INVALID_NUB_THREAD; 1681} 1682 1683nub_addr_t 1684DNBProcessGetSharedLibraryInfoAddress (nub_process_t pid) 1685{ 1686 MachProcessSP procSP; 1687 DNBError err; 1688 if (GetProcessSP (pid, procSP)) 1689 return procSP->Task().GetDYLDAllImageInfosAddress (err); 1690 return INVALID_NUB_ADDRESS; 1691} 1692 1693 1694nub_bool_t 1695DNBProcessSharedLibrariesUpdated(nub_process_t pid) 1696{ 1697 MachProcessSP procSP; 1698 if (GetProcessSP (pid, procSP)) 1699 { 1700 procSP->SharedLibrariesUpdated (); 1701 return true; 1702 } 1703 return false; 1704} 1705 1706//---------------------------------------------------------------------- 1707// Get the current shared library information for a process. Only return 1708// the shared libraries that have changed since the last shared library 1709// state changed event if only_changed is non-zero. 1710//---------------------------------------------------------------------- 1711nub_size_t 1712DNBProcessGetSharedLibraryInfo (nub_process_t pid, nub_bool_t only_changed, struct DNBExecutableImageInfo **image_infos) 1713{ 1714 MachProcessSP procSP; 1715 if (GetProcessSP (pid, procSP)) 1716 return procSP->CopyImageInfos (image_infos, only_changed); 1717 1718 // If we have no process, then return NULL for the shared library info 1719 // and zero for shared library count 1720 *image_infos = NULL; 1721 return 0; 1722} 1723 1724//---------------------------------------------------------------------- 1725// Get the register set information for a specific thread. 1726//---------------------------------------------------------------------- 1727const DNBRegisterSetInfo * 1728DNBGetRegisterSetInfo (nub_size_t *num_reg_sets) 1729{ 1730 return DNBArchProtocol::GetRegisterSetInfo (num_reg_sets); 1731} 1732 1733 1734//---------------------------------------------------------------------- 1735// Read a register value by register set and register index. 1736//---------------------------------------------------------------------- 1737nub_bool_t 1738DNBThreadGetRegisterValueByID (nub_process_t pid, nub_thread_t tid, uint32_t set, uint32_t reg, DNBRegisterValue *value) 1739{ 1740 MachProcessSP procSP; 1741 ::bzero (value, sizeof(DNBRegisterValue)); 1742 if (GetProcessSP (pid, procSP)) 1743 { 1744 if (tid != INVALID_NUB_THREAD) 1745 return procSP->GetRegisterValue (tid, set, reg, value); 1746 } 1747 return false; 1748} 1749 1750nub_bool_t 1751DNBThreadSetRegisterValueByID (nub_process_t pid, nub_thread_t tid, uint32_t set, uint32_t reg, const DNBRegisterValue *value) 1752{ 1753 if (tid != INVALID_NUB_THREAD) 1754 { 1755 MachProcessSP procSP; 1756 if (GetProcessSP (pid, procSP)) 1757 return procSP->SetRegisterValue (tid, set, reg, value); 1758 } 1759 return false; 1760} 1761 1762nub_size_t 1763DNBThreadGetRegisterContext (nub_process_t pid, nub_thread_t tid, void *buf, size_t buf_len) 1764{ 1765 MachProcessSP procSP; 1766 if (GetProcessSP (pid, procSP)) 1767 { 1768 if (tid != INVALID_NUB_THREAD) 1769 return procSP->GetThreadList().GetRegisterContext (tid, buf, buf_len); 1770 } 1771 ::bzero (buf, buf_len); 1772 return 0; 1773 1774} 1775 1776nub_size_t 1777DNBThreadSetRegisterContext (nub_process_t pid, nub_thread_t tid, const void *buf, size_t buf_len) 1778{ 1779 MachProcessSP procSP; 1780 if (GetProcessSP (pid, procSP)) 1781 { 1782 if (tid != INVALID_NUB_THREAD) 1783 return procSP->GetThreadList().SetRegisterContext (tid, buf, buf_len); 1784 } 1785 return 0; 1786} 1787 1788//---------------------------------------------------------------------- 1789// Read a register value by name. 1790//---------------------------------------------------------------------- 1791nub_bool_t 1792DNBThreadGetRegisterValueByName (nub_process_t pid, nub_thread_t tid, uint32_t reg_set, const char *reg_name, DNBRegisterValue *value) 1793{ 1794 MachProcessSP procSP; 1795 ::bzero (value, sizeof(DNBRegisterValue)); 1796 if (GetProcessSP (pid, procSP)) 1797 { 1798 const struct DNBRegisterSetInfo *set_info; 1799 nub_size_t num_reg_sets = 0; 1800 set_info = DNBGetRegisterSetInfo (&num_reg_sets); 1801 if (set_info) 1802 { 1803 uint32_t set = reg_set; 1804 uint32_t reg; 1805 if (set == REGISTER_SET_ALL) 1806 { 1807 for (set = 1; set < num_reg_sets; ++set) 1808 { 1809 for (reg = 0; reg < set_info[set].num_registers; ++reg) 1810 { 1811 if (strcasecmp(reg_name, set_info[set].registers[reg].name) == 0) 1812 return procSP->GetRegisterValue (tid, set, reg, value); 1813 } 1814 } 1815 } 1816 else 1817 { 1818 for (reg = 0; reg < set_info[set].num_registers; ++reg) 1819 { 1820 if (strcasecmp(reg_name, set_info[set].registers[reg].name) == 0) 1821 return procSP->GetRegisterValue (tid, set, reg, value); 1822 } 1823 } 1824 } 1825 } 1826 return false; 1827} 1828 1829 1830//---------------------------------------------------------------------- 1831// Read a register set and register number from the register name. 1832//---------------------------------------------------------------------- 1833nub_bool_t 1834DNBGetRegisterInfoByName (const char *reg_name, DNBRegisterInfo* info) 1835{ 1836 const struct DNBRegisterSetInfo *set_info; 1837 nub_size_t num_reg_sets = 0; 1838 set_info = DNBGetRegisterSetInfo (&num_reg_sets); 1839 if (set_info) 1840 { 1841 uint32_t set, reg; 1842 for (set = 1; set < num_reg_sets; ++set) 1843 { 1844 for (reg = 0; reg < set_info[set].num_registers; ++reg) 1845 { 1846 if (strcasecmp(reg_name, set_info[set].registers[reg].name) == 0) 1847 { 1848 *info = set_info[set].registers[reg]; 1849 return true; 1850 } 1851 } 1852 } 1853 1854 for (set = 1; set < num_reg_sets; ++set) 1855 { 1856 uint32_t reg; 1857 for (reg = 0; reg < set_info[set].num_registers; ++reg) 1858 { 1859 if (set_info[set].registers[reg].alt == NULL) 1860 continue; 1861 1862 if (strcasecmp(reg_name, set_info[set].registers[reg].alt) == 0) 1863 { 1864 *info = set_info[set].registers[reg]; 1865 return true; 1866 } 1867 } 1868 } 1869 } 1870 1871 ::bzero (info, sizeof(DNBRegisterInfo)); 1872 return false; 1873} 1874 1875 1876//---------------------------------------------------------------------- 1877// Set the name to address callback function that this nub can use 1878// for any name to address lookups that are needed. 1879//---------------------------------------------------------------------- 1880nub_bool_t 1881DNBProcessSetNameToAddressCallback (nub_process_t pid, DNBCallbackNameToAddress callback, void *baton) 1882{ 1883 MachProcessSP procSP; 1884 if (GetProcessSP (pid, procSP)) 1885 { 1886 procSP->SetNameToAddressCallback (callback, baton); 1887 return true; 1888 } 1889 return false; 1890} 1891 1892 1893//---------------------------------------------------------------------- 1894// Set the name to address callback function that this nub can use 1895// for any name to address lookups that are needed. 1896//---------------------------------------------------------------------- 1897nub_bool_t 1898DNBProcessSetSharedLibraryInfoCallback (nub_process_t pid, DNBCallbackCopyExecutableImageInfos callback, void *baton) 1899{ 1900 MachProcessSP procSP; 1901 if (GetProcessSP (pid, procSP)) 1902 { 1903 procSP->SetSharedLibraryInfoCallback (callback, baton); 1904 return true; 1905 } 1906 return false; 1907} 1908 1909nub_addr_t 1910DNBProcessLookupAddress (nub_process_t pid, const char *name, const char *shlib) 1911{ 1912 MachProcessSP procSP; 1913 if (GetProcessSP (pid, procSP)) 1914 { 1915 return procSP->LookupSymbol (name, shlib); 1916 } 1917 return INVALID_NUB_ADDRESS; 1918} 1919 1920 1921nub_size_t 1922DNBProcessGetAvailableSTDOUT (nub_process_t pid, char *buf, nub_size_t buf_size) 1923{ 1924 MachProcessSP procSP; 1925 if (GetProcessSP (pid, procSP)) 1926 return procSP->GetAvailableSTDOUT (buf, buf_size); 1927 return 0; 1928} 1929 1930nub_size_t 1931DNBProcessGetAvailableSTDERR (nub_process_t pid, char *buf, nub_size_t buf_size) 1932{ 1933 MachProcessSP procSP; 1934 if (GetProcessSP (pid, procSP)) 1935 return procSP->GetAvailableSTDERR (buf, buf_size); 1936 return 0; 1937} 1938 1939nub_size_t 1940DNBProcessGetStopCount (nub_process_t pid) 1941{ 1942 MachProcessSP procSP; 1943 if (GetProcessSP (pid, procSP)) 1944 return procSP->StopCount(); 1945 return 0; 1946} 1947 1948nub_bool_t 1949DNBResolveExecutablePath (const char *path, char *resolved_path, size_t resolved_path_size) 1950{ 1951 if (path == NULL || path[0] == '\0') 1952 return false; 1953 1954 char max_path[PATH_MAX]; 1955 std::string result; 1956 CFString::GlobPath(path, result); 1957 1958 if (result.empty()) 1959 result = path; 1960 1961 if (realpath(path, max_path)) 1962 { 1963 // Found the path relatively... 1964 ::strncpy(resolved_path, max_path, resolved_path_size); 1965 return strlen(resolved_path) + 1 < resolved_path_size; 1966 } 1967 else 1968 { 1969 // Not a relative path, check the PATH environment variable if the 1970 const char *PATH = getenv("PATH"); 1971 if (PATH) 1972 { 1973 const char *curr_path_start = PATH; 1974 const char *curr_path_end; 1975 while (curr_path_start && *curr_path_start) 1976 { 1977 curr_path_end = strchr(curr_path_start, ':'); 1978 if (curr_path_end == NULL) 1979 { 1980 result.assign(curr_path_start); 1981 curr_path_start = NULL; 1982 } 1983 else if (curr_path_end > curr_path_start) 1984 { 1985 size_t len = curr_path_end - curr_path_start; 1986 result.assign(curr_path_start, len); 1987 curr_path_start += len + 1; 1988 } 1989 else 1990 break; 1991 1992 result += '/'; 1993 result += path; 1994 struct stat s; 1995 if (stat(result.c_str(), &s) == 0) 1996 { 1997 ::strncpy(resolved_path, result.c_str(), resolved_path_size); 1998 return result.size() + 1 < resolved_path_size; 1999 } 2000 } 2001 } 2002 } 2003 return false; 2004} 2005 2006 2007void 2008DNBInitialize() 2009{ 2010 DNBLogThreadedIf (LOG_PROCESS, "DNBInitialize ()"); 2011#if defined (__i386__) || defined (__x86_64__) 2012 DNBArchImplI386::Initialize(); 2013 DNBArchImplX86_64::Initialize(); 2014#elif defined (__arm__) 2015 DNBArchMachARM::Initialize(); 2016#endif 2017} 2018 2019void 2020DNBTerminate() 2021{ 2022} 2023 2024nub_bool_t 2025DNBSetArchitecture (const char *arch) 2026{ 2027 if (arch && arch[0]) 2028 { 2029 if (strcasecmp (arch, "i386") == 0) 2030 return DNBArchProtocol::SetArchitecture (CPU_TYPE_I386); 2031 else if (strcasecmp (arch, "x86_64") == 0) 2032 return DNBArchProtocol::SetArchitecture (CPU_TYPE_X86_64); 2033 else if (strstr (arch, "arm") == arch) 2034 return DNBArchProtocol::SetArchitecture (CPU_TYPE_ARM); 2035 } 2036 return false; 2037} 2038